Home / 9,915.44-13,685.37-9,117.50

Finding the Fourth Proportional to 9,915.44, 13,685.37 and 9,117.50

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Solution

The fourth proportional to 9,915.44, 13,685.37 and 9,117.50 is: 12,584.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.44 : 13,685.37 = 9,117.50 : x
  2. Step 2: Convert to fraction form
    9,915.44/13,685.37 = 9,117.50/x
  3. Step 3: Cross multiply
    9,915.44x = 13,685.37 × 9,117.50
  4. Step 4: Simplify right side
    9,915.44x = 124,776,328.91
  5. Step 5: Solve for x
    x = 124,776,328.91/9,915.44
  6. Step 6: Final answer
    x = 12,584.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.